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6715633: when matching a memory node the adr_type should not change

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Verify the adr_type of a mach node was not changed

Reviewed-by: rasbold, never
This commit is contained in:
Vladimir Kozlov 2008-06-20 11:10:05 -07:00
parent 694776b297
commit 0a077d276e
10 changed files with 90 additions and 27 deletions
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20
hotspot/src/share/vm/opto/connode.cpp
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@ -565,10 +565,12 @@ Node* DecodeNNode::Identity(PhaseTransform* phase) {
}
const Type *DecodeNNode::Value( PhaseTransform *phase ) const {
if (phase->type( in(1) ) == TypeNarrowOop::NULL_PTR) {
return TypePtr::NULL_PTR;
}
return bottom_type();
const Type *t = phase->type( in(1) );
if (t == Type::TOP) return Type::TOP;
if (t == TypeNarrowOop::NULL_PTR) return TypePtr::NULL_PTR;
assert(t->isa_narrowoop(), "only narrowoop here");
return t->is_narrowoop()->make_oopptr();
}
Node* DecodeNNode::decode(PhaseTransform* phase, Node* value) {
@ -599,10 +601,12 @@ Node* EncodePNode::Identity(PhaseTransform* phase) {
}
const Type *EncodePNode::Value( PhaseTransform *phase ) const {
if (phase->type( in(1) ) == TypePtr::NULL_PTR) {
return TypeNarrowOop::NULL_PTR;
}
return bottom_type();
const Type *t = phase->type( in(1) );
if (t == Type::TOP) return Type::TOP;
if (t == TypePtr::NULL_PTR) return TypeNarrowOop::NULL_PTR;
assert(t->isa_oopptr(), "only oopptr here");
return t->is_oopptr()->make_narrowoop();
}
Node* EncodePNode::encode(PhaseTransform* phase, Node* value) {